//
//  WYXMuteQuack.m
//  Design Patterns
//
//  Created by ying on 2016/12/10.
//  Copyright © 2016年 ying. All rights reserved.
//

#import "WYXMuteQuack.h"

@implementation WYXMuteQuack

- (void)quack{
    NSLog(@"I can not quack");
}

@end
